A transport device that crosses steps

Abstract

This invention provides a step-crossing transportation device, comprising a top plate and a bottom plate, with a linear adjusting rod disposed between the top and bottom plates. An adaptive clamping mechanism is provided at the top of the top plate, and two rows of wheel sets are provided at the bottom of the bottom plate. Each wheel set includes at least two traveling wheels, and a synchronous transmission belt is sleeved between two adjacent traveling wheels. The two wheel sets are connected to the corresponding traveling wheels via a synchronous shaft. A foldable support mechanism is provided around the synchronous shaft, comprising an arc-shaped guide rail and a support block. The arc-shaped guide rail is slidably connected to the periphery of the synchronous shaft, and the support block is fixedly connected to the arc-shaped guide rail. When the arc-shaped guide rail pushes the support block to move outwards towards the outer periphery of the traveling wheels, the side working surface of the support block forms surface contact with the step. An deployable stabilizing bracket is provided at the end of the synchronous shaft, comprising multi-stage folding linkages and an electric push rod disposed between adjacent folding linkages. This device improves the flexibility of the transportation vehicle in crossing steps.

Description

Technical Field

[0001] This invention relates to the field of transportation technology, and more specifically to a transportation device for crossing steps. Background Technology

[0002] Currently, during construction projects, it is often necessary to move large equipment, building materials, and heavy construction machinery parts between work surfaces at different elevations. Traditional solutions mainly rely on lifting machinery for hoisting and moving. However, due to limited working spaces, complex terrain, or temporary construction needs, cranes are often unable to be deployed due to site constraints, resulting in low moving efficiency or even stagnation. There is also a problem with insufficient flexibility for transport vehicles to cross steps. Summary of the Invention

[0003] The purpose of this invention is to provide a step-crossing transportation device to solve the problem of insufficient flexibility of transportation vehicles when crossing steps.

[0004] To achieve the above objectives, the present invention provides a step-crossing transport device using the following technical solution:

[0005] A step-crossing transport device includes a top plate and a bottom plate, with a linear adjusting rod provided between the top plate and the bottom plate;

[0006] The top surface of the top plate is provided with an adaptive clamping mechanism, and the bottom surface of the bottom plate is provided with two rows of wheel sets. Each row of wheel sets includes at least two walking wheels. A synchronous transmission belt is sleeved between two adjacent walking wheels, and the two wheel sets are connected to the corresponding two walking wheels through a synchronous shaft.

[0007] A foldable support mechanism is provided on the periphery of the synchronous shaft. The foldable support mechanism includes an arc-shaped guide rail and a support block. The arc-shaped guide rail is slidably connected to the periphery of the synchronous shaft, and the support block is fixedly connected to the end of the arc-shaped guide rail. When the arc-shaped guide rail pushes the support block to move towards the outer periphery of the walking wheel, the side working surface of the support block forms a surface contact with the edge of the step.

[0008] The end of the synchronous shaft is provided with a deployable stabilizing bracket, which includes multi-stage folding links and electric push rods disposed between adjacent folding links.

[0009] As an optimization of a step-crossing transport device, the adaptive clamping mechanism includes a base, a sleeve, and a limiting block. The base is rotatably connected to the top plate, the sleeve is fixedly connected to one side of the circumference of the base, the limiting block is L-shaped, one end of the limiting block is slidably connected inside the sleeve, and the other end of the limiting block is provided with a pressure sensor.

[0010] As an optimization of the step-crossing transportation device, the foldable support mechanism further includes a fixed rod and a telescopic cylinder. The fixed rod extends radially along the synchronous shaft, and the arc-shaped guide rail slides through the fixed rod. One end of the telescopic cylinder is hinged to the side of the fixed rod, and the other end of the telescopic cylinder is hinged to the end of the arc-shaped guide rail.

[0011] As an optimization of the step-crossing transport device, the deployable stabilizing support also includes support feet that are ball-hinged to the bottom of the lowest folding link.

[0012] As an optimization of the step-crossing transportation device, a linear adjustment rod is provided at each of the four corners of the base plate, and a ball joint is provided at the top of each linear adjustment rod. The four corners of the top plate are respectively fitted onto the four ball joints.

[0013] As an optimization of the step-crossing transportation device, an inclination sensor is provided on the top plate, and the inclination sensor signal is connected to the linear adjustment rod.

[0014] As an optimization of a step-crossing transport device, the cross-sectional shape of the support block is a right triangle, and the right-angle vertex of the support block is provided with a wear-resistant pad.

[0015] Compared to existing technologies, the advantages of this invention are as follows: The linear adjustment rod allows for adjustment of the distance between the top and bottom plates, ensuring the top plate remains horizontal; the adaptive clamping mechanism secures the object to the top plate; the wheel set allows the bottom plate to be transported smoothly on flat ground using multiple wheels; the foldable support structure allows the support blocks to fold along the arc-shaped guide rail to the outer circumference of the wheels, contacting the step surface; simultaneously, under the rotation of the synchronous shaft, multiple support blocks alternately support different steps, achieving ladder-climbing motion and improving the flexibility of the transport vehicle in crossing steps; the deployable stabilizing bracket assists the wheels in climbing, and the multi-stage folding linkage raises one end of the transport device, facilitating contact between the support blocks and steps of different heights, further enhancing the flexibility of the transport vehicle in crossing steps. Attached Figure Description

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic diagram of the overall structure of a step-crossing transportation device according to an embodiment of this application;

[0018] Figure 2 This is a schematic diagram of the ladder climbing process of a step-crossing transportation device according to an embodiment of this application;

[0019] Figure 3 This is a schematic diagram of the overall structure of the foldable support mechanism according to an embodiment of this application.

[0020] In the diagram: 1. Top plate; 2. Bottom plate; 21. Adaptive rod; 3. Adaptive clamping mechanism; 31. Base; 32. Sleeve; 33. Limiting block; 34. Pressure sensor; 4. Linear adjusting rod; 41. Ball joint; 5. Wheel set; 51. Walking wheel; 52. Synchronous transmission belt; 53. Synchronous shaft; 6. Foldable support mechanism; 61. Arc-shaped guide rail; 62. Support block; 63. Fixing rod; 64. Telescopic cylinder; 7. Deployable stabilizing bracket; 71. Folding connecting rod; 72. Electric push rod; 73. Support foot pad; 8. Tilt sensor. Detailed Implementation

[0021] To make the technical solution and advantages of the present invention clearer, the present invention and its beneficial effects will be described in further detail below with reference to specific embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0022] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0024] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail below.

[0025] This application provides a step-crossing transport device, which adopts the following technical solution:

[0026] Reference Figure 1 and Figure 2The transport device includes a top plate 1 and a bottom plate 2. The top plate 1 carries the transported object. A linear adjusting rod 4 is installed between the top plate 1 and the bottom plate 2. In this embodiment, the linear adjusting rod 4 is a cylinder. A main board is installed on the top plate 1, and a microcontroller is mounted on the main board. The main board communicates with the servo drive controller of the linear adjusting rod 4, and can control the raising and lowering of the linear adjusting rod 4 through the main board. Specifically, a linear adjusting rod 4 is installed at each of the four corners of the bottom plate 2. Each linear adjusting rod 4 can be raised and lowered independently. Furthermore, a ball joint 41 is integrally formed at the top of each linear adjusting rod 4. Corresponding mounting holes are opened at the four corners of the top plate 1. The top plate 1 is fitted onto the ball joint 41 through the mounting holes, which facilitates the linear adjusting rod 4 to adjust the top plate 1 to any angle relative to the bottom plate 2, which helps to keep the top plate 1 level. Furthermore, an inclination sensor 8 is installed on the top plate 1. The inclination sensor 8 is connected to the linear adjustment rod 4 through the main board to form a closed-loop control signal connection, which provides real-time feedback to adjust the levelness of the top plate 1, so that the top plate 1 is always in a horizontal position during the movement, thereby improving the stability of transportation.

[0027] Reference Figure 1 and Figure 2 An adaptive clamping mechanism 3 is installed on the top surface of the top plate 1 for clamping the object to be transported. Further, the adaptive clamping mechanism 3 includes a base 31, a sleeve 32, and a limiting block 33. The base 31 is circular and rotatably mounted on the top surface of the top plate 1. It is driven by a motor to rotate or lock, adjusting the direction of the clamped object and improving clamping stability. The sleeve 32 is a hollow cuboid, extending from the circular shape of the base 31 in two opposite directions. The limiting block 33 is L-shaped, with one end inserted into the sleeve 32 and sliding relative to it via a cylinder. The other end of the limiting block 33 extends vertically upwards and is equipped with a pressure sensor 34, which is connected to the main board signal. When the limit blocks 33 on both sides of the base 31 approach each other, the limit blocks 33 clamp the object to be transported, and the pressure sensor 34 transmits the pressure data to the main board until the limit blocks 33 clamp the object and the movement of the limit blocks 33 relative to the sleeve 32 is locked, thereby realizing the clamping of materials of different sizes.

[0028] Reference Figure 1 and Figure 2The bottom surface of the base plate 2 is equipped with two rows of wheel sets 5 side by side. Each row of wheel sets 5 includes at least two traveling wheels 51. In this embodiment, one row of wheel sets 5 includes three traveling wheels 51. The base 2 and the traveling wheels 51 are connected by an adapting rod 21, which can be a cylinder. According to the changes in terrain, each adapting rod 21 drives the corresponding traveling wheel 51 to abut against the ground, so that each traveling wheel 51 can maintain contact with the terrain during movement, improving the overall stability of the transportation device. A synchronous transmission belt 52 is provided between two adjacent traveling wheels 51 to achieve motion coupling of multiple traveling wheels 51. Furthermore, between the two rows of wheel sets 5, the traveling wheels 51 are paired one by one, and a synchronous shaft 53 is installed between corresponding two traveling wheels 51 to make the traveling wheels 51 on both sides move synchronously.

[0029] Reference Figure 1 , Figure 2 and Figure 3 Multiple foldable support mechanisms 6 are installed around the synchronous shaft 53. Each foldable support mechanism 6 includes an arc-shaped guide rail 61 and a support block 62. The arc-shaped guide rail 61 is slidably installed around the synchronous shaft 53, and its movement trajectory extends from the inside of the traveling wheel 51 to its outer periphery. The support block 62 is fixedly welded to the end of the guide rail. By sliding the arc-shaped guide rail 61, the support block 62 is pushed to the outer periphery of the traveling wheel 51. When the arc-shaped guide rail 61 pushes the support block 62 to the outer periphery of the traveling wheel 51, the support block 62 forms a protrusion on the periphery of the traveling wheel 51. The side working surface of the support block 62 contacts the step surface, and another support block 62 contacts the next step under the rotation of the synchronous shaft 53, lifting the synchronous transmission belt 52 upward at a certain angle. During the movement of the synchronous transmission belt 52, the device moves up the steps through the reciprocating alternating support of multiple support blocks 62 and the steps, thereby improving the flexibility of the transport device in crossing steps. Furthermore, the cross-sectional shape of the support block 62 is a right triangle. The two right-angled sides of the support block 62 serve as working surfaces that contact the edge of the step, which can increase the stability of the support block 62. At the same time, wear-resistant pads are installed at the right-angled vertices of the support block 62, which can increase the friction between the side working surfaces of the support block 62 and the step, thereby improving the stability of the transport device on the step.

[0030] Furthermore, referring to Figure 1 and Figure 3The foldable support mechanism 6 also includes a fixed rod 63 and a telescopic cylinder 64. The fixed rod 63 extends radially outward along the synchronous shaft 53. One end of the telescopic cylinder 64 is hinged to one side of the fixed rod 63, and the other end of the telescopic cylinder 64 is hinged to one end of the arc-shaped guide rail 61. The arc-shaped guide rail 61 passes through the fixed rod 63 from one side to the other. The sliding position of the arc-shaped guide rail 61 changes with the length of the telescopic cylinder 64. By controlling the arc-shaped cylinder 64 to stop at different positions, the support block 62 can have different angle shapes, thereby meeting the needs of crossing steps in different construction environments and improving the flexibility of transportation vehicles.

[0031] Reference Figure 1 and Figure 2 The end of the synchronous shaft 53 extends outward through the traveling wheel 51, and a deployable stabilizing bracket 7 is installed at the end of the synchronous shaft 53. The deployable stabilizing bracket 7 includes multi-stage folding links 71 and electric push rods 72. The multi-stage folding links 71 are connected sequentially starting from the end of the synchronous shaft 53, and the electric push rods 72 are installed between two adjacent folding links 71. By changing the length of the electric push rods 72, the folding state between the multi-stage folding links 71 can be changed. Specifically, when the electric push rods 72 are fully extended, the multi-stage folding links 71 are fully unfolded into a vertical straight line, independently raising and suspending the traveling wheel 51, causing one side of the transport device to tilt at a certain angle, facilitating the alignment of the support block 62 with the step; when the electric push rods 72 are not fully unfolded, the electric push rods 72 form a triangular stabilizing structure between the two folding links 71, creating a fixed support height between the multi-stage folding links 71, adjusting the transport device to a suitable tilt angle to adapt to the support requirements of different terrains and tilt angles, thereby improving the flexibility of the transport device.

[0032] Furthermore, referring to Figure 1 and Figure 3 The deployable stabilizing bracket 7 also includes a support foot pad 73. One side of the support foot pad 73 is ball-jointed to the bottom of the folding link 71 at the bottom end. A rectangular rubber pad is installed on the other side of the support foot pad 73. Under its own weight, the rectangular rubber pad is vertically downward facing the ground, so that when the folding link 71 of any shape contacts the ground, the support foot pad 73 can always be in positive contact with the ground, thereby improving the support stability of the folding link 71.

[0033] The experimental principle of this embodiment is as follows: When an object needs to be transported across steps, it is placed on the top plate 1. The adaptive clamping mechanism 3 selects the clamping direction according to the length or width of the object. The base 31 rotates so that the sleeve 32 is positioned in the clamping direction. The limiting blocks 33 move closer to each other along the sleeve 32 to clamp the object. Under the feedback adjustment of the tilt sensor 8 of the top plate 1, the linear adjustment rod 4 constantly adjusts the position and tilt angle of the top plate 1 relative to the bottom plate 2, so that the top plate 1 is always in a horizontal state, which helps to improve the stability of object transportation. At the bottom of the bottom plate 2, the climbing action is performed by the foldable support mechanism 6, which is driven by the telescopic cylinder 64. The arc-shaped guide rail 61 pushes the support block 62 to fold towards the outer periphery of the traveling wheel 51, forming a protrusion on the outer periphery of the traveling wheel 51. The side working surface of the support block 62 contacts and abuts against the step. Driven by the synchronous transmission belt 52, the transport device moves forward and upward simultaneously. Multiple support blocks 62 alternate on different steps, forming a step-climbing action. Further assistance is provided by the deployable stabilizing bracket 7 to improve the stability of the contact between the traveling wheel 51 and the step. Simultaneously, when a large lifting angle is required, the multi-stage folding linkage 71 can also tilt one end of the transport device, facilitating the overlap of the support block 62 with the step and improving the flexibility of transporting objects across steps. Through this device, objects can adapt to different terrains, completing the action of transporting objects up steps while maintaining object stability, thereby improving the flexibility of the transport vehicle in crossing steps and contributing to increased construction efficiency.

[0034] Based on the disclosure and teachings of the foregoing specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments described above, and any obvious improvements, substitutions, or modifications made by those skilled in the art based on the present invention are within the scope of protection of the present invention. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on the present invention.

Claims

1. A device for transporting goods across steps, characterized in that, It includes a top plate (1) and a bottom plate (2), and a linear adjustment rod (4) is provided between the top plate (1) and the bottom plate (2); The top surface of the top plate (1) is provided with an adaptive clamping mechanism (3), and the bottom surface of the bottom plate (2) is provided with two rows of wheel sets (5). Each row of wheel sets (5) includes at least two walking wheels (51). A synchronous transmission belt (52) is sleeved between two adjacent walking wheels (51). The two wheel sets (5) are connected to the corresponding two walking wheels (51) through a synchronous shaft (53). The adaptive clamping mechanism (3) includes a base (31), a sleeve (32) and a limiting block (33). The base (31) is rotatably connected to the top plate (1). The sleeve (32) is fixedly connected to one side of the circumference of the base (31). The limiting block (33) is L-shaped. One end of the limiting block (33) is slidably connected to the sleeve (32). The other end of the limiting block (33) is provided with a pressure sensor (34). A foldable support mechanism (6) is provided on the periphery of the synchronous shaft (53). The foldable support mechanism (6) includes an arc-shaped guide rail (61) and a support block (62). The arc-shaped guide rail (61) is slidably connected to the periphery of the synchronous shaft (53), and the support block (62) is fixedly connected to the end of the arc-shaped guide rail (61). When the arc-shaped guide rail (61) pushes the support block (62) to move towards the outer periphery of the walking wheel (51), the side working surface of the support block (62) forms a surface contact with the edge of the step. The foldable support mechanism (6) further includes a fixed rod (63) and a telescopic cylinder (64). The fixed rod (63) extends radially along the synchronous shaft (53). The arc-shaped guide rail (61) slides through the fixed rod (63). One end of the telescopic cylinder (64) is hinged to the side of the fixed rod (63), and the other end of the telescopic cylinder (64) is hinged to the end of the arc-shaped guide rail (61). The end of the synchronous shaft (53) is provided with a deployable stabilizing bracket (7), which includes a multi-stage folding link (71) and an electric push rod (72) disposed between adjacent folding links (71).

2. The step-crossing transport device according to claim 1, characterized in that, The deployable stabilizing bracket (7) also includes a support foot pad (73), which is ball-hinged to the bottom of the bottommost folding link (71).

3. The step-crossing transport device according to claim 1, characterized in that, The bottom plate (2) has a linear adjustment rod (4) at each of its four corners, and each linear adjustment rod (4) has a ball joint (41) at its top. The top plate (1) is fitted onto the four ball joints (41) at its four corners.

4. The step-crossing transport device according to claim 1, characterized in that, An inclination sensor (8) is provided on the top plate (1), and the inclination sensor (8) is connected to the linear adjustment rod (4).

5. A step-crossing transport device according to claim 1, characterized in that, The cross-sectional shape of the support block (62) is a right triangle, and a wear-resistant pad is provided at the right-angle vertex of the support block (62).

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